1.lsu中包含的lsa
2.ospf的状态（重点）
3.在OSPF网络中，存在着3种类型的网络：广播型、点到点、NBMA。其中在广播型的网络中需要选举DR和BDR，而对于DR和BDR的选举原则是我们众所周知的：先比较router的优先级、优先级相同则比较router-id。router-id的确定则根据以下的原则：如果指定了router-id就用指定的，如果没有指定就是用回环接口，如果还没有就使用路由器所有接口中ip地址最大的作为该路由器的router-id。
4.关于passive-interface的说明
http://blog.sina.com.cn/s/blog_5ec353710101eb4y.html
5.关于ospf带宽的计算
The formula used to calculate the OSPF cost is:
- Cost = reference bandwidth / interface bandwidth
The default reference bandwidth is 10^8 (100,000,000); therefore, the formula is:
- Cost = 100,000,000 bps / interface bandwidth in bps
6.ospf中的dr和bdr
http://blog.sina.com.cn/s/blog_5ec353710102vcs5.html
7.ospf2和ospfv3的区别
8.配置ospfv3
9.由于所有的link-local地址都有相同的前缀FE80::/64，并且每个网络接口都必须分配一个link-local地址，因而导致当发送数据包到一个link-local地址时，如果路由器使用普通的路由方法就无法决定选用哪个网络接口。因此，引入了一种被叫做zone index的标识符，它提供额外的路由信息，这个标识符通常指网络接口，并且通过一个百分号(%)被附加在IPv6地址后面。
10.
- Neighbor ID - The router ID of the neighboring router.
- Pri - The OSPF priority of the interface. Value is used in the DR and BDR election.
- State - The OSPF state of the interface. FULL state means that the router and its neighbor have identical OSPF LSDBs. On multiaccess networks such as Ethernet, two routers that are adjacent may have their states displayed as 2WAY. The dash indicates that no DR or BDR is required because of the network type.
- Dead Time - The amount of time remaining that the router waits to receive an OSPF Hello packet from the neighbor before declaring the neighbor down. This value is reset when the interface receives a Hello packet.
- Interface ID - The interface ID or link ID.
- Interface - The interface on which this router has formed adjacency with the neighbor.
- Neighbor ID - The router ID of the neighboring router.
- Pri - The OSPF priority of the interface. Value is used in the DR and BDR election.
- State - The OSPF state of the interface. FULL state means that the router and its neighbor have identical OSPF LSDBs. On multiaccess networks such as Ethernet, two routers that are adjacent may have their states displayed as 2WAY. The dash indicates that no DR or BDR is required because of the network type.
- Dead Time - The amount of time remaining that the router waits to receive an OSPF Hello packet from the neighbor before declaring the neighbor down. This value is reset when the interface receives a Hello packet.
- Interface ID - The interface ID or link ID.
- Interface - The interface on which this router has formed adjacency with the neighbor.